WO1991006964A1 - Dispositif de contact pour inverseur - Google Patents

Dispositif de contact pour inverseur Download PDF

Info

Publication number
WO1991006964A1
WO1991006964A1 PCT/DE1989/000689 DE8900689W WO9106964A1 WO 1991006964 A1 WO1991006964 A1 WO 1991006964A1 DE 8900689 W DE8900689 W DE 8900689W WO 9106964 A1 WO9106964 A1 WO 9106964A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
contact pieces
spring
pieces
connecting line
Prior art date
Application number
PCT/DE1989/000689
Other languages
German (de)
English (en)
Inventor
Horst Hendel
Josef Kern
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PCT/DE1989/000689 priority Critical patent/WO1991006964A1/fr
Priority to DE89911776T priority patent/DE58907255D1/de
Priority to JP1506113A priority patent/JP2974704B2/ja
Priority to EP89911776A priority patent/EP0481993B1/fr
Priority to US07/828,794 priority patent/US5324901A/en
Priority to AT89911776T priority patent/ATE103103T1/de
Publication of WO1991006964A1 publication Critical patent/WO1991006964A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
    • H01H11/043—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion by resistance welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
    • H01H2011/047—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion on both sides of the contact body portion

Definitions

  • the invention relates to a contact arrangement for a changeover relay with at least two switch contact pieces, which are arranged on both sides at a free end of a movable contact spring, and with an electrical connecting line, one end of which is directly connected in an electrically conductive manner to a switch contact piece.
  • a movable contact spring between two counter contacts is provided at its free end with two switch contacts arranged on both sides.
  • the first switching contact piece arranged on one side of the movable contact spring is directly connected to an electrical connecting line designed as a copper wire, so that the contact spring itself does not conduct the current to be switched.
  • the latter is so long that it exceeds the width of the free end of the movable contact spring.
  • the width of the second switching contact piece arranged on the other side of the free end of the contact spring corresponds approximately to the width of the free end of the contact spring.
  • this comparatively short switching contact piece is either welded to the contact spring or connected to the first comparatively long switching contact piece by means of an attachment.
  • the current to be switched flows in each contact-making position of the contact spring via the long switching contact piece, so that it experiences greater heating compared to the short switching contact piece. If the current to be switched flows to the short switch contact piece, it has to pass through at least two connections. However, each connection represents an increased ohmic resistance, which causes an electrical power loss.
  • the differently designed switch contact pieces lead to an unsymmetrical mass distribution, which is characterized in particular by an unfavorable dynamic behavior during the switching processes, e.g. B. in an increased tendency to bounce, noticeable.
  • the known contact arrangement requires a precious metal requirement which is significantly increased compared to the precious metal requirement required for the pure contacting surfaces of the switching contact pieces.
  • the manufacture and processing of switching contact pieces of different lengths further increases the manufacturing costs for the known contact arrangement.
  • the object of the invention is to provide a contact arrangement with significantly improved operating behavior while at the same time reducing the production costs.
  • the approximately identical design of the switch contact pieces results in a significantly more favorable, d. H. more uniform mass distribution in the area of the free end of the contact spring.
  • Switch contact pieces has an approach which is electrically conductively connected to one end of the electrical connecting line.
  • a defined area for the formation of the electrically conductive connection is advantageously created, and, on the other hand, the thickness of the contact spring can be bridged through this approach.
  • a further advantageous development of the contact arrangement according to the invention consists in the fact that one end of the electrical connecting line has an extension which is electrically conductively connected to the at least one further switching contact piece.
  • Such an embodiment of the contact arrangement according to the invention has the advantage that switch contact pieces of completely identical design are used; due to the increased number of identical switch contact pieces, this is economically advantageous.
  • the attachment of one end of the electrical connection line can be produced, for example, by pressing after the one end of the electrical connection line has been compressed in a welding process. It is also conceivable that both the second switching contact piece and the one end of the electrical connecting line each have lugs, the sum of which corresponds to the thickness of the contact spring.
  • a further advantageous development of the contact arrangement according to the invention provides that the extension extends through a recess in the free end of the contact spring. With such a recess, the positioning of the approach is advantageously simplified, so that overall a higher manufacturing quality can be achieved.
  • An advantageous development of the contact arrangement according to the invention provides that the extension is fastened in the recess. So that during the manufacturing process formed between the element having the approach - namely the one end of the electrical connection line and / or the second switching contact piece - and the contact spring, a structural unit, which is advantageous for example in terms of handling during manufacture.
  • a further advantageous development of the contact arrangement according to the invention consists in the fact that the electrically conductive connections are welded connections and the switch contact pieces have a plating which improves the welding behavior in the region of their welding zones.
  • the mechanical quality and the conductivity of the welded connection between the respective switch contact pieces and the one end of the electrical connecting line is further improved, as a result of which a reduction in the ohmic resistance in these areas is achieved and thus the heating of the switch contact pieces or the entire contact arrangement during the current to be switched flows, is further reduced.
  • the contact arrangement according to the invention is characterized overall by a considerable reduction in the masses to be moved during the switching operations, which on the one hand has a favorable effect on the dynamic behavior of the contact arrangement and on the other hand requires lower driving forces.
  • FIG. 1 shows a contact arrangement designed according to the invention
  • FIG. 2 details of the design of the free end of the contact spring with the switching contact pieces
  • Fig. 3 shows a section through Figure 2 in the area of
  • Switch contact pieces Details of a further embodiment of the free end of the contact spring with the two switch contact pieces and
  • Fig. 5 shows a section in Figure 4 in the area of Switch contact pieces.
  • the contact arrangement shown schematically in FIG. 1 is part of a relay, as is generally described for example in the German utility model 83 25 986 with its magnet system.
  • a contact spring 2 is fastened to an armature 1, which is indicated as an indication.
  • the contact spring 2 has a free end 3, which serves as a center contact spring in a changeover relay.
  • the contact spring 2 or its free end 3 takes two stable positions depending on the position of the armature 1. In the first stable position (shown in FIG. 1), a mating contact element 4 forms a closed electrical contact with a switching contact piece 5. In the second stable position of the free end 3 of the contact spring 2, a second switching contact piece 6 forms a closed electrical contact with a further counter contact element 7 (FIG. 1 shows this contact in the open state).
  • connection elements 12 and 13 are each connected to connection elements 12 and 13, respectively, which emerge as external connections through a base of the changeover relay, which is not shown in FIG.
  • the area of the free end 3 of the contact spring 2 is shown in an exploded view in FIG.
  • One end 8 of the electrical connecting line 9 has been compressed in a welding process and has a plate-like shape.
  • the connecting line 9 is the rectangular switch contact piece 5, which is clad with a thin silver layer 20 on its surface facing the one end 8.
  • the free end 3 of the contact spring 2 has a recess 21, through which an attachment 22 of the rivet-like switching contact piece 6 extends in the joined state.
  • the end face of the extension 22 is also with a
  • FIG. 3 shows a section through FIG. 2 in the area of the switch contact pieces in the joined state. Due to the plating with the silver layers 20 and 23, after the switching contact pieces 5 and 6 have been joined, a large-area, high-quality welded connection with the one end 8 of the electrical connecting line 9 results, so that a largely low-loss current flow between the electrical connecting line 9 and the respective contact-forming Switch contact piece 5 or 6 takes place. A largely symmetrical distribution of the total mass can be seen in the area of the switching contact pieces 5 and 6.
  • the current to be switched flows via the connecting element 11, via the electrical connecting line 9 one end 8 of the electrical connecting line and the (only) electrical connection between the one end 8 and the switching contact piece 5 and via the connecting element 12 (see Fig. 1).
  • the current to be switched in the second stable position of the contact spring 2 covers a corresponding path via the (only) electrical connection of the switching contact piece 6 with one end 8 of the electrical connecting line 9 to the connecting element 13.
  • FIG. 4 A further detail of the contact arrangement is shown in an exploded view in FIG. 4, in which a switch contact piece 40 and a second switch contact piece 41 are of identical design. Between the switch contact pieces 40 and 41 there is an end 42 of an electrical connecting line 43, which is provided with an extension 44 by corresponding embossing during compression. The approach 44 is 45 in its height to the thickness of the free end 3 of the contact spring 2 and 46 in its diameter to the diameter of the Recess 21 matched. Surfaces 47 and 48 of the switching contact pieces 40 and 41 facing one end 42 of the electrical connecting line 43 are equipped with a welding aid in the form of a silver-containing layer.
  • the elements described in connection with FIG. 4 are shown in section in the assembled state.
  • the projection 44 is connected to the recess 21 of the contact spring 2 by a riveting process before the connection between the switching contact pieces 40 and 41 with the one end 42 of the electrical connecting line 43 or the projection 44 is produced by welding.
  • the switch contact pieces 40 and 41 can be separated from the same strip material in constant lengths, the strip material being able to consist, for example, of a copper alloy coated with a noble metal on one side (contact surface) which is already coated on its other side with the welding aid.
  • the similar design of the switching contact pieces 40 and 41 also results in a particularly symmetrical design of the contact arrangement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Contacts (AREA)
  • Push-Button Switches (AREA)
  • Manufacture Of Switches (AREA)
  • Relay Circuits (AREA)

Abstract

Un dispositif de contact pour inverseur présente un ressort mobile de contact (2), à l'extrémité libre (3) duquel sont disposés sur les deux faces des contacts de commutation (5, 6), le courant à établir étant amené à ces contacts de commutation (5, 6) par un conducteur d'alimentation électrique (9). Pour que les masses soient réparties de manière aussi symétrique que possible au niveau de l'extrémité libre (3) du ressort de contact (2) et pour que le courant à établir soit amené aux contacts de commutation (5, 6) avec un minimum de pertes, il est prévu que ces contacts de commutation (5, 6) soient reliés directement par une liaison électriquement conductrice à une extrémité (8) du conducteur électrique (9). A cet effet, une extrémité (8) du conducteur électrique (9) ou un contact de commutation (5, 6) présentent de préférence un épaulement dont la face frontale forme une surface d'assemblage servant à établir la liaison électriquement conductrice.
PCT/DE1989/000689 1989-10-24 1989-10-24 Dispositif de contact pour inverseur WO1991006964A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PCT/DE1989/000689 WO1991006964A1 (fr) 1989-10-24 1989-10-24 Dispositif de contact pour inverseur
DE89911776T DE58907255D1 (de) 1989-10-24 1989-10-24 Kontaktanordnung für ein wechsler-relais.
JP1506113A JP2974704B2 (ja) 1989-10-24 1989-10-24 チェンジ・オーバコンタクトリレー用の接点装置
EP89911776A EP0481993B1 (fr) 1989-10-24 1989-10-24 Dispositif de contact pour inverseur
US07/828,794 US5324901A (en) 1989-10-24 1989-10-24 Contact device for a changer relay
AT89911776T ATE103103T1 (de) 1989-10-24 1989-10-24 Kontaktanordnung fuer ein wechsler-relais.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE1989/000689 WO1991006964A1 (fr) 1989-10-24 1989-10-24 Dispositif de contact pour inverseur

Publications (1)

Publication Number Publication Date
WO1991006964A1 true WO1991006964A1 (fr) 1991-05-16

Family

ID=6835276

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1989/000689 WO1991006964A1 (fr) 1989-10-24 1989-10-24 Dispositif de contact pour inverseur

Country Status (6)

Country Link
US (1) US5324901A (fr)
EP (1) EP0481993B1 (fr)
JP (1) JP2974704B2 (fr)
AT (1) ATE103103T1 (fr)
DE (1) DE58907255D1 (fr)
WO (1) WO1991006964A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19715115C2 (de) * 1997-04-11 2001-07-19 Aeg Niederspannungstech Gmbh Schaltvorrichtung
DE102008039705B4 (de) * 2008-08-26 2018-05-30 Te Connectivity Germany Gmbh Kontaktbaugruppe für ein Relais, Relais mit Kontaktbaugruppe und Verfahren zur Montage eines Relais
DE102008039704A1 (de) * 2008-08-26 2010-03-04 Tyco Electronics Amp Gmbh Kontaktanordnung mit gebogener Litze, Relais mit Kontaktanordnung und Verfahren zur Montage eines Relais
DE102014201533A1 (de) * 2014-01-28 2015-07-30 Tyco Electronics Austria Gmbh Schaltkontakt und Verfahren zu dessen Herstellung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1158119A (en) * 1965-10-14 1969-07-16 Texas Instruments Inc Spring Blade Assembly
DE1665958A1 (de) * 1967-06-12 1971-04-08 Siemens Ag Hochbelastbare Kontaktanordnung
US3930211A (en) * 1974-11-25 1975-12-30 Caribe Circuit Breaker Co Inc Circuit breaker
EP0136592A1 (fr) * 1983-09-09 1985-04-10 Siemens Aktiengesellschaft Relais électromagnétique
EP0167668A1 (fr) * 1984-05-09 1986-01-15 Siemens Aktiengesellschaft Dispositif de contact pour relais à pouvoir de coupure élevé

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1158119A (en) * 1965-10-14 1969-07-16 Texas Instruments Inc Spring Blade Assembly
DE1665958A1 (de) * 1967-06-12 1971-04-08 Siemens Ag Hochbelastbare Kontaktanordnung
US3930211A (en) * 1974-11-25 1975-12-30 Caribe Circuit Breaker Co Inc Circuit breaker
EP0136592A1 (fr) * 1983-09-09 1985-04-10 Siemens Aktiengesellschaft Relais électromagnétique
EP0167668A1 (fr) * 1984-05-09 1986-01-15 Siemens Aktiengesellschaft Dispositif de contact pour relais à pouvoir de coupure élevé

Also Published As

Publication number Publication date
ATE103103T1 (de) 1994-04-15
JP2974704B2 (ja) 1999-11-10
JPH05503803A (ja) 1993-06-17
DE58907255D1 (de) 1994-04-21
EP0481993B1 (fr) 1994-03-16
US5324901A (en) 1994-06-28
EP0481993A1 (fr) 1992-04-29

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